Cementing dumper



B. COUSINS CEMENTING DUMPR Filed Dec. 8, 192].

Apr. 3, 1923.

f QW auw 'devices at present employed in the Patented Apr. 3, 1923.

y UNITED STATES BENJAMIN COUSINS, 0F SLICK, OKLAHOM.

CEMENTING DUMPER.

Application*lednecember 8, 1921. Serial No. 521,068.

To al?. u'lmm. it m (1.3/ concern.:

Be it known that I, BENJAMIN ColsiNs. a citizen of the United States, residing at Slick. in the county of Creek and State of Oklahoma.. have invented certain new and useful Improvements in Cementing Dumpers: and I do hereby declare the following to be a fu'll` clear, and exact descript-ionof the invention. such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a. cementing dumper for placing mud or cement of the desired consistency in the bottom of an oil well for the purpose of preventing water from entering the well. Bailers or other mudding in and cementing of o il wells are slow and uncertain in unloading, with the result that. the placing of the mud or cement is only eii'ected wlth a great expenditure of i ltime 'and labor.

tube,

lThe object of the present invention is to provide a simple, strong and durable cementing dumper by which the cementing mixtnremay be easi y, quickly and certainly placed in the well at the desired point;

A principal fea-ture of the invention, generally stated, consists in constructing a cementing dumper with a. tube having a de-` livery opening vthrough the lower end thereof, and in providing for said delivery opening a closure which is capable of bodily movement in the direction of length of said means adapted to be suspended from a bailing line orthe like being releasably connected to the closure for maintaining the .i -latter in close-d relation to the tube, and

means also being provided for suspending Ithe said closure 'from the tube when the closure is in open position.

A further feature of the invention consists i in constructing a cementing dumper with a tube having a delivery opening through the lower end thereof, and in providing a mov able closure for the delivery opening, latching means detachably connected to the closure and adapted to be suspended from a hailing line being employed for maintaining: the

Y said closure in closed relation tothe tube,

the said closure when in such position being adapted to carry -the entire weightl of the tube.

Another feature of the" invention consistsv in constructing a cementing dumper .with

- a tube. having a delivery opening, amovable moved to open position for permitting discharge of the contents of the dumper.

Other features of thev invention, residing in particular combinations off parts and in details of the elements of the mechanism, will hereinafter appear.

In the drawings chosen for the purpose of illustrating the invention, the scope whereof ispointed out in the claims.

AFigure 1 is a view, partly in elevation and partly in vertical section, of a cementing dumper embodying the invention, parts being broken away and the elements of the device being shown in the relations they occupy when 'the dumper is loaded and being lowered into the well. y

Figure 2 is a view corresponding to Fig. l, but illustrating the positions assumed by the parts to allow the discharge of the cement. The entire lower end of the tube l is preferably open to a-i'ord a large delivery opening 2 through which the cement may discharge without obstruction. Near its lower end the said tube is provided with a downwardly facing seat or shoulder 3 for engaging the upper surface of a valve plate or closure L forming a movable bottom for the tube. The lower portion of the tube is preferably formed externally of said seat or shoulder 3 with a shoe or Han e 5 which extends below and embraces t e bottom member or valve plate 4' when the latter is in closed position, the said shoe 5 preferably being fashioned Separately and united to said tube 1 by spot welding or in other suitablevmanne-r. As will be perceived, the shoe 5 not only serves to protect the seat 3 and closure 4 from defacement and injury but it also serves to guide the valve or closure 4, to proper seating engagement with 'the shoulder 3 and to center said valve plate when the latter is in closed position.

The closure 4, which may conveniently be coned asv indicated at 6, is connected to a stem" member 7 which extends upwardly within the tube 1, the upper end of said stem llt) preferably projecting above ya V-shaped filling opening 8 which may be advantageously provided at one Iside of the upper end of the tube. The closure or bottom 4 is preferably connected to the stem 7 in such manner that the said closure when in open position may be capable of a universal tilting or tipping movement, thus allowing it to yield in any direction in response to the pressure ofthe cementing mixture that is being discharged from the dumper. A simple mode of forming suchv a connection between the closure 4 and the stem.7 is to rovide the said closure with a centrally dlisposed eye 9 which interlocks with an eye 10 at the) lower end of the stem member 7.

Secured to and projecting above the upper end of the tube 1 is a bail 11, the lower ends of the arms of which are preferably located within the tube and secured to the latter by rivets 12. The interior of the tube l between the shoulder or valve seat 3 and the lower ends of the bail 11 is smooth or free from projections, thus allowing free discharge of the load from the tube or shell 1.

Extending transversely ofthe tube and preferably connecting the arms of the bail 11 above the upper end of said tube is a hanger bar 13 from which the stem 7 and the valve member or closure 4 carried thereby are suspended when the said valve is in open position. The hanger bar 13 passes through an eye 14 at the upper end of the valve stem 7, the eye being elon ated so as to permit the valve plate or c osure 4 to move bodily downward and away from the lower end of the tube 1. The movable stem 7 is also fashioned at its upper end with another eye 15 which cooperates with certain latching means now to be described, andv through which the closure or valve plate 4 is releasably maintained in closed position.

The latching mechanism for maintaining the closure or bottom plate 4 in closed position while the dum er isbeing lowered in the well .is prefera ly a-'hook member 16 having an elongated eye 17 through which the bail 11 passes and which is adapted to be secured to a bailing line or cable (not shown)."' 'The lower end of the member 16 is formed as a hook or spur 1S which is integrally connected to the eye 17 by the stem portion 19. Upon the stem 19 1s slidably mounted an annular sleeve 20 which, vas illustrated in Fig: 2, is adapted under the influence of gravity to assume a position preventing the eye 15 at the upper end of the stem 7 from accidentally engaging with the hook 18 after the bottom 4 of the dumper has moved to open position. As shown in Fig. 1, the hook or spur 18 extends through the eye 15 at the upper, end of the valve stem when the valve or closure 4 is in closed position.

Assuming the dumper to be suspended from a bailing line attached to the eye 17 at the upper end of the hook member 16, the several parts of the mechanism will occupy the positions shown in Fig. 1 when the cementing material is being lowered into the well, it being noted that the entire weight of the tube 1 and of the cementing material within the tube is transferred from the bottom. 4 to the stem 7 and thence through the hook member 16 to the hailing line. When xthe dumper rests on the bottom of the well the tension of the hailing line is released from the hook member 1G and the latter thereupon moves downwardly with respect to the valve stem 7, thereby causing the hook or spur 18 to be disengaged from the eye 15 at the upper end of the said stem 7.

,The unlatching of the stem 7 from the hook 18 allows the dumper bottom 4 to move away from the bottom of the tube 1, thus uncovering the delivery opening 2 in the bottom of the dumper and allowing the cementing material to be discharged. When the eye 15 of the valve stem has been disengaged from the hook the slidin weight 20, which has been forced upwardy to permit these parts to be disconnected, slides downwardly upon. the stem portion .19 of the hook member so as to prevent the eye 15 from accidentally reassuming latched relation with the member 16. When the closure 4 is in open position the stem 7 by which it is suspended is supported upon the hanger bar 13. The dumper having once been opened within the well remains open until it is drawn to the top of the hole and relatched for recharging.

If it is desired to unload the dumper at an intermediate point in the well all that is necessary to do is to plunge the device quickly down the hole and stop it suddenly at the desired point of unloading. This causes the dumper to rebound, thereby relieving the tension of t-he bailing line and effecting an unlatching of the valve plate or closure 4 in the manner heretofore described.

I claim 1. A cementing dumper comprising a tube having a delivery opening at the lower end thereof, a movable bottom for said tube, said bottom being capable of bodily movement in the direction of length of said tube, means detachably connected to said bottom for maintaining the latter in closed relation to said tube, said means being adapted to be suspended from a hailing line and being adapted to be operatively detached from said bottom to permit the latter to assume an open position, and means for suspending said bottom from said tube.

2. `A cementing dumper comprising a tube having a delivery opening through the lower' end thereof, a movable bottom for said tube,

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`means for supportin movable means extending within said tube for supporting said bottom in closed position and also in open position, releasable said movable means when said bottom is in closed position, and means independent of said releasable means for su porting said movable means from said tu e when said bottom is in open position.

3. A cementing dumper comprising a tube having a delivery opening through the lower end thereof, a movable bottom for said tube,

movable means extending within said tube for supporting said bottom in closed position and also in open position, latching means for supporting' said movable means when said bottom is closed, and means for supporting said movable means when said bottom is open, said bottom being movably connected to said movable means.

4. A cementing dumper comprising a tube having a delivery opening through the lowei` end thereof, a bottom for said tube, said bottom being bodily movable downwardly to uncover said delivery opening, and means on Said tube for centering said bottom in closed position, said means extending below and embracing saidbottom when the latter is vin closed position.

5. A cementing dum er comprising a tube havinga delivery opening through the lower end thereof, a movable bottom for said tube, and means for releasably maintaining said bottom in closed position, said tube being provided with a downwardly facing seat for engaging said bottom and having a shoe portion external to said seat extending below and embracing said bottom when 'the latter is in closed position and'serving to guide said bottom to closed position.

6. A cementing bailer comprisingva tube having a delivery opening through the lower end thereof and provided with ab'ail at its' upper end, a movable bottom for said tube, means for releasably maintaining said bottom in closed position, said tube being provided with a downwardly facing seat for said bottom and its interior between said seat and said bail being smooth, and means extending belowsaid seat for guiding said bottom to closed position.

7. A cementing dumper comprising a tube having a delivery opening, a movable closure for said opening, a stem connectedto said closure and extending within said tube, means operatively releasable from said stem for connecting the latter to a bailing line, and means for supporting said stem from said tube when said closure is in open position, saild closure being connected to said stem on 85.r A cementing dumper comprising a tube having al delivery opening, a movable closure for said opening, a bail mounted on said tube, a hook member movably mounted on said bail, a stem connected to said closure and adapted to be releasably connected to said hook member, and means for su portin said stem when the latter is release from said hook member.

9. A cementing dumper comprising a tube having a delivery opening, a movable closure for said opening, a stem movably connected to saidclosure, a bail secured to said tube, means movably mounted on said bail for releasably supporting said stem to maintain said closure in c osed position, and means for supporting said stem when said closure is in open position.

10. A cementing dumper comprising a tube having a delivery' opening through the lower end thereof, a movable closure for said opening, a bail secured to said tube, a stem connected to said closure and extending upwardly therefrom within said tube, a hanger bar extending transversely of said tube and adapted to support said stem, a hook member movably mounted on said bail and adapted to support said stem, said stem being provided with an eye adapted to receive said hook member, and said hook member and stem being adapted to be disengaged by a movement of said hook member toward said closure, and means movably mounted on said hook member for preventing accidental reengagement of said hook member and eye.

11. A cementingv dumper comprising a tube having a delivery opening, a movable closure for said opening, a-stem connected to said closure and extending upwardly mounted on said bail and adapted releasably.

to support said stem, said hook member. and stem being relatively movable to eifect their disconnection, a sleeve mounted onsaid hook member to prevent accidental reconnection of said stem. and hook member, and means for supporting said stem when it-is released from said hook member. Q

13. A cementing dumper comprising a iio tube havin a delivery o ening` through the lower end t ereof, a mova le bottom for said tube,y and latching means detachabl connected to said bottom and adapted to e suspended from a hailing line for maintaining said bottom in closed relationA to said tube, said bottom when in open position being released from said latching means and when in closed position being ada ted to support the entire weight of said turbe.

14. A eementing dumper comprising a tube havin a delivery opening through the lower end t ereof, a movable bottom for said tube, and means adaptedto be suspended from'a bai ing line for maintaining said bottom in closed relation to said tube, said tube having a portion of greater diameterb than the interior of said tube above said movable bottom which extends below and embraces said bottom when the latter is in closed position, and said bottom 'when in closed position being adapted to support the entire weight of said tube.

15. A cementing dumner comprising a tube having a delivery opening at the lower end thereof, a movable bottom adapted to close said opening, and latching means for maintaining said bottom in closed relation to said tube, said bottom when in open position being adapted to have a universal tipping movement, and said latchin means being releasable from operative reation to said bottom by a relative movement of said bottom and said latching means.

16. A cementing dumper comprising a tube having a delivery opening therein, a closure for said delive opening, and latching means-for maintalning said closure in position for closing said opening, said latchin means being adapted to be released by a re ative movement of said closure with respect to said tube, and said closure when in open position being adapted to have a universal tipping movement.

In testimony whereof I aflix my' signature.

BENJAMIN COUSINS. 

